Katsuhiko Izumi

Person

Chigasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical pickup and optical disc unit
- Patent number 8,331,207
- Issue date Dec 11, 2012
- Hitachi Media Electronics Co., Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical disc apparatus
- Patent number 8,094,541
- Issue date Jan 10, 2012
- Hitachi Media Electronics Co., Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disc drive, optical pickup and optical component used therefor
- Patent number 8,004,956
- Issue date Aug 23, 2011
- Hitachi Media Electronics Co., Ltd.
- Fumio Isshiki
- G11 - INFORMATION STORAGE
Information Patent Grant
Photodetector, diffraction grating, optical pickup and optical disc...
- Patent number 7,936,658
- Issue date May 3, 2011
- Hitachi Media Electronics Co., Ltd.
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup and optical disc apparatus
- Patent number 7,733,759
- Issue date Jun 8, 2010
- Hitachi Media Electronics Co., Ltd.
- Kenichi Shimada
- G11 - INFORMATION STORAGE
Information Patent Grant
Photodetector, diffraction grating, optical pickup and optical disc...
- Patent number 7,706,220
- Issue date Apr 27, 2010
- Hitachi Media Electronics Co., Ltd.
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical detector, optical pickup and optical information reproducin...
- Patent number 6,778,475
- Issue date Aug 17, 2004
- Hitachi, Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens driving device and optical disc apparatus using the...
- Patent number 6,680,883
- Issue date Jan 20, 2004
- Hitachi, Ltd.
- Shinro Inui
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens driving device and optical disc apparatus using the...
- Patent number 6,567,352
- Issue date May 20, 2003
- Hitachi, Ltd.
- Shinro Inui
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical detector, optical pickup and optical information reproducin...
- Patent number 6,567,355
- Issue date May 20, 2003
- Hitachi, Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens driving device and optical disc apparatus using the...
- Patent number 6,195,314
- Issue date Feb 27, 2001
- Hitachi, Ltd.
- Shinro Inui
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc auto changer for recording or reproducing information on a des...
- Patent number 5,982,719
- Issue date Nov 9, 1999
- Hitachi, Ltd.
- Tatsumi Nishijima
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and reproducing apparatus with repositioning sto...
- Patent number 5,608,585
- Issue date Mar 4, 1997
- Hitachi, Ltd.
- Kenmei Masuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and reproducing apparatus
- Patent number 5,448,427
- Issue date Sep 5, 1995
- Hitachi, Ltd.
- Kenmei Masuda
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
PHOTODETECTOR, DIFFRACTION GRATING, OPTICAL PICKUP AND OPTICAL DISC...
- Publication number 20100148045
- Publication date Jun 17, 2010
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Application
Optical Disc Drive, Optical Pickup and Optical Component Used Therefor
- Publication number 20090086611
- Publication date Apr 2, 2009
- Fumio ISSHIKI
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL PICKUP AND OPTICAL DISC APPARATUS
- Publication number 20080298210
- Publication date Dec 4, 2008
- Katsuhiko IZUMI
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical disc unit
- Publication number 20080219119
- Publication date Sep 11, 2008
- Hitachi Media Electronics Co., Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical drive
- Publication number 20070286053
- Publication date Dec 13, 2007
- Hitachi Media Electronics Co., Ltd.
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical disc apparatus
- Publication number 20070097811
- Publication date May 3, 2007
- Hitachi Media Electronics Co., Ltd.
- Kenichi Shimada
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and optical disk apparatus
- Publication number 20070025207
- Publication date Feb 1, 2007
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Application
Photodetector, diffraction grating, optical pickup and optical disc...
- Publication number 20070019530
- Publication date Jan 25, 2007
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Application
Diffraction grating, optical pickup device, and optical disk apparatus
- Publication number 20060193219
- Publication date Aug 31, 2006
- Tomoto Kawamura
- G11 - INFORMATION STORAGE
Information Patent Application
Objective lens driving device and optical disc apparatus using the...
- Publication number 20030137919
- Publication date Jul 24, 2003
- Shinro Inui
- G11 - INFORMATION STORAGE
Information Patent Application
Optical detector, optical pickup and optical information reproducin...
- Publication number 20030080274
- Publication date May 1, 2003
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical detector, optical pickup and optical information reproducin...
- Publication number 20030072228
- Publication date Apr 17, 2003
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical detector, optical pickup and optical information reproducin...
- Publication number 20020031062
- Publication date Mar 14, 2002
- Katsuhiko Izumi
- G11 - INFORMATION STORAGE

Katsuhiko Izumi

Person

Patents Grantslast 30 patents

Optical pickup and optical disc unit

Optical pickup and optical disc apparatus

Optical disc drive, optical pickup and optical component used therefor

Photodetector, diffraction grating, optical pickup and optical disc...

Optical pickup and optical disc apparatus

Photodetector, diffraction grating, optical pickup and optical disc...

Optical detector, optical pickup and optical information reproducin...

Objective lens driving device and optical disc apparatus using the...

Objective lens driving device and optical disc apparatus using the...

Optical detector, optical pickup and optical information reproducin...

Objective lens driving device and optical disc apparatus using the...

Disc auto changer for recording or reproducing information on a des...

Magnetic recording and reproducing apparatus with repositioning sto...

Magnetic recording and reproducing apparatus

Patents Applicationslast 30 patents

PHOTODETECTOR, DIFFRACTION GRATING, OPTICAL PICKUP AND OPTICAL DISC...

Optical Disc Drive, Optical Pickup and Optical Component Used Therefor

OPTICAL PICKUP AND OPTICAL DISC APPARATUS

Optical pickup and optical disc unit

Optical pickup and optical drive

Optical pickup and optical disc apparatus

Optical pickup and optical disk apparatus

Photodetector, diffraction grating, optical pickup and optical disc...

Diffraction grating, optical pickup device, and optical disk apparatus

Objective lens driving device and optical disc apparatus using the...

Optical detector, optical pickup and optical information reproducin...

Optical detector, optical pickup and optical information reproducin...

Optical detector, optical pickup and optical information reproducin...